I tried to register for this group Celtic game. I tried a different username/ password than I use for my other games (different group of games). // It said yes, my screen name is Perseus. But then, a big white screen w/ just that name. No change. // So, I tried getting out of the game, logging in with that name/ password. It told me that it was invalid. This happened several times. /// So I tried using the username/ password that I use in the other group of games. It told me "that is already taken." //

So what do I do?
1) How do I use the new username/ pass I chose for this game? Or:
2) How do I get it to see my other username/ pass as ME (not "already taken")?
3)Or: How do I wipe it clean-- start all over to get username/ password for this game? ---- And if so, HOW, so it does not get messed up again?